83 results about "Network allocation vector" patented technology

A processing method for a network allocation vector (NAV) timer is performed by a Non-Access Point Multi-Link Device (Non-AP MLD). The method includes: determining a link type of a first communication link of the Non-AP MLD in an enhanced Multi-Link Single Radio (eMLSR) mode; wherein the Non-AP MLD includes the first communication link in an enabled state and a second communication link in the enabled state, the link type comprises a simultaneous transmit and receive (STR) link or a non-simultaneous transmit and receive (NSTR) link, and the second communication link includes the NSTR link that receives a target radio frame or the STR link that performs frame exchange; and performing processing on a NAV timer of the first communication link according to the link type.

This disclosure provides methods, devices, and techniques to indicate operations by extremely high throughput (EHT) devices on an operating bandwidth, including devices in a basic service set (BSS) supporting the use of a 320 MHz channel. In some aspects, the supported functionality may include extensions to flexibility and support rules, structures, and signaling using legacy fields, frames, and features. In addition, the supported functionality may include channel sensing and reporting, such as per-channel network allocation vectors (NAVs) for the sub-channels of the operating bandwidth. A device may identify an operating mode for an operating bandwidth and determine a value for a bandwidth query report (BQR) or a target wake time (TWT) element. The device may check multiple NAVs for sub-channels of the operating bandwidth. The operating bandwidth may span concurrent operations on traditional Wi-Fi frequency bands including the 2.4 and 5 GHz bands as well as the 6 GHz band.

This disclosure provides methods, devices, and techniques to indicate operations by extremely high throughput (EHT) devices on an operating bandwidth, including devices in a basic service set (BSS) supporting the use of a 320 MHz channel. In some aspects, the supported functionality may include extensions to flexibility and support rules, structures, and signaling using legacy fields, frames, and features. In addition, the supported functionality may include channel sensing and reporting, such as per-channel network allocation vectors (NAVs) for the sub-channels of the operating bandwidth. A device may identify an operating mode for an operating bandwidth and determine a value for a bandwidth query report (BQR) or a target wake time (TWT) element. The device may check multiple NAVs for sub-channels of the operating bandwidth. The operating bandwidth may span concurrent operations on traditional Wi-Fi frequency bands including the 2.4 and 5 GHz bands as well as the 6 GHz band.

A method performed by a sharing access point (AP) to share a transmission opportunity (TXOP) owned by the sharing AP with a shared AP. The method includes generating and transmitting a control frame indicating that the sharing AP is sharing the TXOP with the shared AP, wherein the control frame includes a first field that indicates a network allocation vector (NAV) protection duration and a second field that indicates a time period allocated for the shared AP within the TXOP, wherein the NAV protection duration is set to be shorter than a duration of the time period allocated for the shared AP.

Provided are a channel access method and apparatus and a communication device. The method includes: a first device sends a first frame, the first frame comprising a first field, and the first field being used for indicating a channel occupancy time of a first channel; the first field is used for a second device to set or update a network allocation vector (NAV), and the NAV is used for the second device to determine a busy time of the first channel; all or part of the channel occupancy time is used for a first type of devices or a third device to perform communication on the first channel, and the third device belongs to the first type devices.

Provided is a wireless communication terminal that communicates wirelessly. The wireless communication terminal includes a transceiver and a processor. The processor is configured to receive the trigger frame using the transceiver and update the network allocation vector based on the trigger frame. At this time, the trigger frame triggers transmission of at least one wireless communication terminal.

The technical features of the present disclosure may relate to an apparatus or method performed in a wireless local area network (WLAN) system. For example, the present specification proposes a technical feature of suggesting an optimal timing for performing non-primary channel access (NPCA), depending on which PPDU format / type / version an overlapping basic service set (OBSS) traffic has. For example, a station (STA) may receive an OBSS signal. For example, on the basis of the OBSS signal, the STA may access an NPCA primary channel, attempt / perform switching to the NPCA primary channel, or trigger or perform an NPCA operation. The NPCA primary channel may be accessed on the basis of at least one of: a basic network allocation vector (NAV) set for the primary channel on the basis of the OBSS signal; and a wait time associated with the OBSS signal. For example, the wait time associated with the OBSS signal may be set on the basis of NAVWaitTime.

Controlling channel access for UHR devices performing a Coordinated-Restricted Target Wake Time (C-RTWT) to prevent interference between Service Periods (SPs) on overlapping BSSs (OBSS). The coordination mechanism creates different rules based on the type of network topology and scenarios detected. In one aspect, a back-to-back CF-End transmission is used to truncate the basic Network Allocation Vector (NAV) of the OBSS. New channel access rules control TXOP termination, overlapping quiet interval and C-RTWT SP sharing for stations across BSSs.

Disclosed are a method and apparatus for transmission or reception based on a network allocation vector (NAV) in a triggered transmission opportunity (TXOP) sharing procedure in a wireless LAN system. The method performed by a first station (STA) in a wireless LAN system, according to an embodiment of the present disclosure, comprises the steps of: receiving a first frame related to a triggered TXOP sharing procedure; receiving a second frame from a second STA; and transmitting, to the second STA, a third frame responding to the second frame, wherein on the basis that the second frame is addressed to the first STA, an NAV set by an STA transmitting the first frame may be ignored by the first STA.

This invention relates to a wireless communication method using network allocation vectors and a wireless communication terminal thereof. A wireless communication terminal is provided. The wireless communication terminal includes a transmitting / receiving unit and a processor. The processor receives a trigger frame using the transmitting / receiving unit and updates the network allocation vector based on the trigger frame. The trigger frame triggers transmission by at least one wireless communication terminal.

Embodiments of the present disclosure relate to a secondary channel communication method, a communication device, and a communication system. The secondary channel communication method comprises: a sending end receives a first message frame in a secondary channel, wherein the first message frame comprises: a first identifier indicating the duration of the first message frame; and the first identifier is set as the duration, sensed by a receiving end, in which an overlapping basic service set physical protocol data unit (OBSS PPDU) occupies a primary channel, or is the same as the duration identified by a second identifier of a second message frame sent by the sending end, so as to ensure that the duration of communication in the secondary channel is not greater than a network allocation vector (NAV) timer duration sensed or set in the primary channel, so that both the sending end and the receiving end can perform communication in the secondary channel, thereby meeting UHR transmission requirements.

A station (STA) receives a first frame via a first channel and sets a first network allocation vector (NAV) associated with the first channel to a non-zero value based on the first frame. The STA transmits a second frame on a channel including the first channel and a second channel, and when the second frame is transmitted, the STA ignores the non-zero value of the first NAV under the condition that a second NAV associated with the second channel is zero.

An integrated circuit of a communication device for controlling a communication process, the communication process comprising: receiving a PHY protocol data unit comprising a duration field, the duration field comprising duration information indicating a duration for which the communication device is prohibited from transmitting a high efficiency, HE, trigger-based TB PHY protocol data unit; issuing a PHY-CCA clear channel assessment primitive parameter indicating bandwidth information about a busy or idle state of each subchannel within an operating bandwidth; updating a network allocation vector, NAV, value based on the duration information when the indicated duration is greater than a current NAV value, and when it is determined that the communication device is not a target receiver of the received PHY protocol data unit; determining a busy / idle state of at least one subchannel comprising a resource unit, RU, in which an HE TB PHY protocol data unit is to be transmitted; and controlling transmission of the HE TB PHY protocol data unit based on the updated NAV value and the busy / idle state of the at least one subchannel, and controlling transmission of the HE TB PHY protocol data unit when the at least one subchannel does not include a primary subchannel, regardless of whether the primary subchannel is busy or idle.

This document discloses methods, systems, and devices related to digital wireless communications, and more specifically, to techniques for adjustable clear channel assessment for multi-link devices with limited simultaneous transmission and reception. The adjustable clear channel assessment method includes adjusting a signal strength measurement algorithm or adjusting an energy detection threshold used for assessment when setting a multi-link network allocation vector for transmission. A method for wireless communications includes identifying, by a wireless device, that a first wireless link and a second wireless link of the wireless device are in a detection state at a first time. The method further includes modifying, by the wireless device, a multi-link channel availability assessment process for the second wireless link based on detecting the transmission state of the first wireless link at the first time.

The embodiment of the invention relates to a communication method, station equipment and access point equipment. The communication method is applied to a station device, and comprises the following steps: in a transmission opportunity TXOP, if the station device or an access point device receives target identification information in a process of non-low-delay service data transmission between the station device and the access point device, the station device determines whether to update an NAV of the station device; the target identification information identifies that the access point device and a first device transmit a first low-delay service, or the station device and a second device transmit a second low-delay service; according to the embodiment of the invention, the station device can determine whether to access the channel according to the target identification information, thereby updating the NAV of the station device, avoiding interference to a low-delay service data transmission process, improving the system throughput, and improving the spectrum utilization rate.

A communication method, apparatus and computer readable storage medium for improving spectrum utilization in a wireless communication system. The spectrum utilization is improved by: determining a data frame under a first link, performing channel sensing under the first link and a second link, updating a network allocation vector timer (NAV timer) under the links according to sensing results under the first link and the second link, and transmitting the data frame according to the NAV timer.

Certain aspects provide a method for wireless communication at a first wireless node. The method generally includes outputting, for transmission to a second wireless node, a first frame indicating one or more candidate nodes with which a TXOP can be shared, the one or more candidate nodes including the second wireless node; performing a frame exchange with one or more third wireless nodes, the one or more third wireless nodes sharing the first BSS with the first wireless node; outputting, for transmission to the second wireless node, a second frame indicating a portion of the TXOP to be shared with the second wireless node, the second frame being output for transmission after the frame exchange; and obtaining, from the second wireless node, a third frame indicating that the TXOP is being returned to the first wireless node.

Network Allocation Vector (NAV) protection in a relay may be provided. Providing NAV protection in a relay can include determining a frame sequence for sending a data signal to a destination Station (dSTA). A Multi-User Request to Send (MU-RTS) is transmitted, the MU-RTS comprising a MU-RTS user information field with a plurality of available bits, the plurality of available bits including one or more frame sequence bits of indicating the frame sequence. One or more Clear to Send (CTS) signals is received, and the data signal is transmitted in response to receiving the CTS. One or more acknowledge signals are received based on the frame sequence.

A station (STA) determines that a physical layer (PHY) protocol data unit (PPDU) being received via a primary channel (PCH) comprises an inter-basic service set (inter-BSS) PPDU. Based on determining that the PPDU being received via the PCH comprises the inter-BSS PPDU, the STA switches from the PCH to a non-primary channel access (NPCA) PCH based on an intra-BSS network allocation vector (NAV) of the STA being equal to zero.

Systems, methods, and devices enhance performance of collocated transceivers in wireless devices. Methods include identifying, using a processing device, an assertion of a radio frequency (RF) active signal, canceling activity of a first transceiver in response to identifying the assertion of the RF active signal, the RF active signal being associated with a second transceiver collocated with the first transceiver, and generating, using the processing device, a network allocation vector (NAV) reset signal in response to identifying a de-assertion of the RF active signal, the NAV reset signal resetting a timer of a wireless device comprising the first transceiver and the second transceiver.

The embodiment of the invention relates to a wireless local area network (WLAN) communication method, communication equipment and a communication system. The wireless local area network (WLAN) communication method comprises the following steps: after the TXOP holder is switched from a secondary channel to a primary channel, sensing whether the primary channel is idle; if it is sensed that the main channel is idle, the TXOP holder empties a count value of a network allocation vector timer (NAV) timer of the main channel; and if it is sensed that the main channel is busy, the TXOP holder updates the count value of the NAVtimer or enters a power saving (PS) mode. According to the embodiment of the invention, through dynamic switching and state sensing between the secondary channel and the primary channel, the access time delay is further reduced, and the UHR transmission requirement is met.

The present application provides a method and apparatus for maintaining a network allocation vector (NAV) timer. The method may be applied to supporting an IEEE protocol, such as an 802.11be / Wi-Fi 7 / Wi-Fi 8 protocol, an IEEE 802.11 integrated mmWave protocol, an IEEE 802.11bf / sensing protocol, or an IEEE 802.15 / UWB protocol. The method can also support a NearLink protocol. The method may be applied to a scenario in which a station may switch between an NPCA mode and a PCA mode. The method comprises: a station maintaining a first NAV timer and a third NAV timer corresponding to a primary channel, and maintaining a first NAV timer and a second NAV timer corresponding to a non-primary channel, which can reduce the number of NAV timers used by a station supporting operation in the NPCA mode and the PCA mode.

A method for switching a channel in a wireless local area network is provided. A station which is a member of a basic service set (BSS) receives information on a non-primary channel access (NPCA) primary channel within a BSS bandwidth of the BSS from an associated access point (AP). The station receives an inter-BSS physical layer protocol data unit (PPDU) on a BSS primary channel and switches from the BSS primary channel to the NPCA primary channel for an NPCA operation if (i) channels occupied by the inter-BSS PPDU does not overlap with the NPCA primary channel, and (ii) the station maintains an intra-BSS network allocation vector (NAV) counter with a zero value.

One example discloses a wireless device including: a wireless transceiver configured to receive a first frame from a first wireless access point (AP) for multi-AP coordination that is not associated with the wireless device and a second frame from a second wireless AP for multi-AP coordination that is associated with the wireless device; and a controller configured to set a network allocation vector (NAV) timer of the wireless device to a non-zero value in response to the first frame and the second frame, wherein the wireless transceiver is further configured to transmit a physical protocol data unit (PPDU) to the second wireless AP even if the NAV timer of the wireless device is non-zero.

Methods and procedures for non-primary channel access (NPCA) are provided herein. A method performed by a non-access point (AP) station (STA) may include receiving a physical layer protocol data unit (PPDU) in a primary channel and operating in an NPCA primary channel. The non-AP STA may operate in an NPCA primary channel in response to determining that the PPDU is not transmitted by an AP-STA the non-AP STA is associated with or by an AP-STA belonging to a group the non-AP STA is associated with, determining that the non-AP STA is not an intended recipient of the PPDU, determining the NPCA primary channel is idle, and determining that a network allocation vector (NAV) set by the PPDU is greater than a threshold.

Full-duplex (FD) enhancements for three scenarios with multiple APs / BSSs. (1) Multiple-AP joint transmissions on a WLAN. Toward eliminating self-interferences and other issues, certain pilot signals in the PPDU are transmitted only by the primary AP. One or more secondary APs participating in the joint transmission receive the pilots to correct their clock in the following symbols. (2) Communications are performed with extended OFDM symbols sent on a second channel which facilitate NAV decoding for stations transmitting on a first channel. (3) More than one AP can perform a joint Ack / BA to a UL PPDU. The secondary AP may utilize its full duplex capability to determine the difference of receiving status between itself and the primary AP, and forward data to the primary which it had not received.

Network Allocation Vector (NAV) protection in a relay may be provided. Providing NAV protection in a relay can include determining a frame sequence for sending a data signal to a destination Station (dSTA). A Multi-User Request to Send (MU-RTS) is transmitted, the MU-RTS comprising a MU-RTS user information field with a plurality of available bits, the plurality of available bits including one or more frame sequence bits of indicating the frame sequence. One or more Clear to Send (CTS) signals is received, and the data signal is transmitted in response to receiving the CTS. One or more acknowledge signals are received based on the frame sequence.

There is a method and a device arranged to perform the method. The method comprises transmitting, by a first access point (AP), to a second AP and during a transmit opportunity (TXOP) obtained by the first AP, a first frame indicating a first duration within the TXOP allocated to the second AP; receiving, by the first AP from the second AP and during the first duration, a trigger frame addressed to a first station (STA); receiving, by the first AP from the second AP and during the first duration, a second frame indicating a return of the first duration by the second AP to the first AP; and after receiving the trigger frame and the second frame, transmitting, by the first AP to the second STA, a third frame for resetting a basic network allocation vector (NAV) of the second STA.

A first station (STA) transmits a TXOP allocation announcement frame to a second STA in order to announce an upcoming transmission opportunity (TXOP) allocation schedule. The TXOP allocation announcement frame includes intended recipients for upcoming TXOP allocation and duration information for TXOP. The duration information is used for NAV setting in receiving STAs.

The invention relates to a wireless communication method and device. The method is applied to a wireless communication device, and the wireless communication device comprises a wireless fidelity (Wi-Fi) module and a second communication module. The method comprises the steps that a first working time slot of the Wi-Fi module and a second working time slot of the second communication module are acquired, and the first working time slot and the second working time slot are not overlapped; acquiring a network allocation vector (NAV) value in the first working time slot; and in response to the NAV value being greater than a preset time threshold, allocating a time slot corresponding to the NAV value to the second communication module.